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ATHENA

MINERALOGY

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Mineral: HILGARDITE
Formula: Ca2B5O9Cl.H2O
Crystal System: Anorthic (Triclinic)
Group: Hilgardite group
IMA Number: 1937
References: AM 22 (1937), 1052; AM 23 (1938), 765; AM 70 (1985), 636; HB5 (2003)
Type Locality: Choctaw Salt Dome, Iberville Parish, Louisiana, USA

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